%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  7. Auflage
%% 
%%  Beispiel 16-03-2 auf Seite 308.
%% 
%%  Copyright (C) 2016 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
%% 
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{193.16928pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pst-tree}
%StopShownPreambleCommands
\begin{document}
\psset{tpos=.6}%  60% vom Anfang
\psframebox[fillstyle=solid,
  fillcolor=black!15]{%
\pstree[treemode=R,thistreesep=0.7cm,
   shortput=nab,nrot=:U,
   thislevelsep=3cm,
   radius=2pt]{\Tc{3pt}~{A}}{%
  \pstree[treemode=U,xbbr=20pt]{%
    \Tc{3pt}~{B}^{oben}}{%
        \TC~*{B1}^{links}
        \TC*~*{B2}_{rechts}}
  \TC~*{C}\ncput*{mitte}
  \pstree[treemode=D,xbbr=20pt]{%
    \Tc{3pt}~{D}_{unten}}{%
        \TC~*{D1}_{links}
        \TC*~{D2}^*{rechts}}
}}
\end{document}
